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Finding the Fourth Proportional to 8,591.87, 11,856.81 and 5,605.94

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Solution

The fourth proportional to 8,591.87, 11,856.81 and 5,605.94 is: 7,736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.87 : 11,856.81 = 5,605.94 : x
  2. Step 2: Convert to fraction form
    8,591.87/11,856.81 = 5,605.94/x
  3. Step 3: Cross multiply
    8,591.87x = 11,856.81 × 5,605.94
  4. Step 4: Simplify right side
    8,591.87x = 66,468,478.14
  5. Step 5: Solve for x
    x = 66,468,478.14/8,591.87
  6. Step 6: Final answer
    x = 7,736.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.